high speed digital cable

TennRich International Corp. Tel: 886-03-3124888 ●●●● Fax: 886-03-3124003 ●●●● www.tennrich.com

High Speed Digital FFC Cable

TennRich International Corp.


1.Introduction2.Products Assembly Structure3.Electric Requirements Design4.Signal Quality Measurement Validation5.Conclusion

Outline


2.5 G2.5 GPCI Express

480M480MBluetooth

1.65 G1.65 GHDMI

1.5 G1.5 G1.5 GSATA

480M480MUSB

750M750M750MLVDS

Display /

TV Game MachinePCNB

Digital signal Interface


Cable Assembly Module

LVDS

Specification•Insulation Resistance over 100MΩ•Contact Resistance low than 40mΩ•Cable Differential Impedance 100±10Ω•Mating Force low than 6 kg•Un-mating Force high than 0.76 kg •Salt water spray: Contact resistance <80mΩ

ApplicationsNotebook ComputerFFC cable connector M-board to display cut across of hinge.

High Definition LCD TVFFC cable connector M-board to display.

Multifunction PrinterFFC cable connector M-board to display or I/O board



USB/Bluetooth

Specification•Insulation Resistance over 100MΩ•Contact Resistance low than 40mΩ•Cable Differential Impedance 90Ω±15%•Rated Current 0.5mA•Working Voltage 5VDC •Salt water spray: Contact resistance <80mΩ

Character Impedance TDR test result FFC connector type cable assembly

Early solder type connector

New



SATA

Specification•Insulation Resistance over 100MΩ•Contact Resistance low than 40mΩ•Cable Differential Impedance 100±10Ω•Rise Time low than 85 ps (35ps input)•Crosstalk low than 26dB (10~4500MHz) •Salt water spray: Contact resistance <80mΩ

Applications

Notebook ComputerCable connects Main board to story system equipment with standard plug-in connector.

Digital Photo Frame Cable connects Main board to story system equipment or I/O interface.

UMPC ComputerCable connects Main board to story system equipment or I/O interface.



HDMI

Specification•Insulation Resistance over 100MΩ•Contact Resistance low than 40mΩ•Cable Differential Impedance 100±10Ω•Rise Time low than 200 psec (10%~90%)•Crosstalk low than 26dB (10~4500MHz) •Salt water spray: Contact resistance <80mΩ

Applications

Notebook ComputerCable connects Main board to HDMI interface I/O connector.

PDP, LCD HDTVCable connects Main board to HDMI interface I/O connector.

Set Top Box / DVD Player Cable connects Main board to HDMI/DVI high speed signal interface I/O connector.



PCI Express

Specification•Insulation Resistance over 100MΩ•Contact Resistance low than 40mΩ•Cable Differential Impedance 100±10Ω•Compatible with Ultra ATA 133 standard•Cable include power bus 5VDC, 500mA•Salt water spray: Contact resistance <80mΩ

Applications

Notebook ComputerCable connects Main board to Laptop interface driver.

PDP, LCD HDTVCable connects Main board to Laptop interface driver

Game Machine / DVD Player Cable connects Main board to Laptop interface driver.


Product Assembly Structure


Product Assembly Structure

Flat Flexible Cable (FFC) were adopted in 1970 as a standard interface to jumper between printed circuit boards. It is made up of thin rectangular tin-plated copper conductors laminated between two layers of polyester insulator tape. These conductors are left uncovered on each end to make electrical contact with the connector. A stiffener is bonded to the cable end which provides mechanical stability for the exposed conductors during mating and unmating. This type of cable is used when a straight one-to-one connection is required.

FFC Production Process


Characteristic ImpedanceDifferential tracesUse controlled impedance FFC cable line that match the differential impedance of your transmission medium and termination resistor. Route the differential pair traces as close together as possible and as soon as they leave the IC. This helps to eliminate reflections and ensures that noise is coupled as common-mode. Signals that are 1 mm apart radiate far less noise than traces 3 mm apart, as magnetic field cancellation is much better with the closer traces. In addition, noise induced on the differential lines is much more likely to appear as common-mode which is rejected by the receiver.

Electrical requirements design

Stripline Dirrerential traces Equation of Stripline


Dielectric Constant ControlDielectric constantA material is classified as “dielectric” if it has the ability to store energy when an external electric field is applied, If an AC sinusoidal voltage source V is placed across the same capacitor, the resulting current will be made up of a charging current Ic and a loss current Il that is related to the dielectric constant. The losses in the material can be represented as a conductance (G) in parallel with a capacitor (C).

AC Dielectric constant test structure Equation of Dielectric constant

Electrical requirements design


• Tektronix’x TDS 8200 oscilloscope

• 2-80E04 sampling modules

• IConnect S-parameter software

• USB/SATA/HDMI test adaptors

• Set of four SMA matched Length cables

Measurement Validation


Outline Measurement Validation


Multi layer with EMI solution Impedance control material


Characteristic Differential Impedance - 91.38 ΩΩΩΩ


Cable Absolute Impedance 93~103Ω Insertion Loss: -4dB

Eye Diagram with SATA I Mask : Pass K-28.5 : 14 ps


SATA II – FFC Cable Signal Integrity Testing Result


� Space SavingIt can be stacked in layers allowing even more signals to betransmitted without increase in size.

� Small DimensionsDue to the increased surface area of flat conductors, it has far more current capacity than equivalent round conductors, which maximizes heat dissipation.

� Excellent FlexibilitySuperior bendability similar to flex circuits (FPC), but better flexibility than other like PVC cables.

�Saving Process CostEasy insert to and pull out from connector and/or solder directly onto PCB.

�Saving Material CostApplicable as FPC replacement, with more cost effective compared with FPC.

�Halogen FreeAll Assembly parts can matching Halogen Free Standard

Conclusion

High Speed Digital FFC Cable Module


Thanks for your attention

For more information about our products, please contact:-

KS HoBusiness Development ManagerTennRich Technology (S) Pte Ltd48, Toh Guan Road East, Enterprise Hub, #06-109,Singapore 608586Email: [email protected]: +65 64112106Mobile: +65 93874351

mailto:[email protected]